A radioactive isotope of mercury- -197-Hg- decays to gold- -197-Au- with a disintegration constant of 0-0108 h-1- -a- Calculate the half-life of the -197-Hg-What fraction of a sample will remain the end of -b- three half-lives and -c- 10-0 days-

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A radioactive isotope of mercury, 197Hg, decays to gold, 197Au, with a disintegration constant of 0.0108h−1. (a) Calculate the half-life of the 197Hg.What fraction of a sample will remain at the end of (b) three half-lives and (c) 10.0 days?

A radioactive isotope of mercury, $^{197} H g$ , decays to gold, $^{197} A u$ , with a disintegration constant of $0.0108 h^{- 1}$ . (a) Calculate the half-life of the $^{197} H g$ .What fraction of a sample will remain at the end of (b) three half-lives and (c) 10.0 days?